Buffing-machine.



C. R. LUTES.

BUFFING MACHINE.

APPLxcATloN FILED APR. 1. |914.

Patented Sept. 26, 1916.

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C.- R. LUTES.

Bumm; MACHINE.

PPLCATIUN FILED APR. 7| 194. 1 ,1 99,285.. Patented Sept. 26, 1916.

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BUFFING MACHINE. APPLICATION FILED APR. I. I9I4.

1,199,285. Patentedsept. 26,1916.

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CARVEL R. LUTES, OF PEABODY, MASSACHUSETTS, ASSIGNGR 0F ONE-HALF TO JOSEPH VT. DANE, GF SALEM, MASSACHUSETTS.

BUFFINGr-MACHIN E.

specification cf Letters raient. Patented Sept. 26, 191.

Application filed April 7, 1914. Serial No. 830,246.

T0 all whom t may concern.'

Be it known that l, CARWJL R. LU'rns, subject of King George V, King of England, residing at Peabody, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Buliing Machines, of which the following is a specification.

rlhe invention relates to an improved bufling machine for use on hides and particularly to a construction wherein means are provided for compensating for irregularities in the thickness of the hide being operated upon and for cleaning the bufng rolls so as to maintain them at all times in the most effective condition.

The main object of the present invention is the provision of a buiiing machine in which the pressure roll is made up of a series of independently automatically controllable sections whereby to compensate for irregularities in the thickness of the leather being operated upon, with the effect to insure even bufling without undue wear on the material.

A further object of the invention is the provision of an automatically actuated cleaning roll adapted to operate at all times in contact with the bufiing roll and to overlie and effectively remove from the latter the dust and grease accumulating thereon during the bufhng operation.

A The invention in its preferred form of details will be described in the following speciication, reference being had particularly to the accompanying drawings, in which:

Figure 1 is a view in front elevation of the improved machine. Fig. 2 is a side elevation of the same. Fig. 3 is a view in elevation partly broken away and illustrating the frame for supporting the cleaning roll, the various shafts coperating therewith being shown in section, and adjacent parts of the machine being shown in dotted outline. Fig. 4 is a sectional detail illustrating means for mounting the cleaning roll. Fig. 5 is a longitudinal section through the pressure roll. Fig. 6 is a transverse section through the same. Fig. T is a transverse section through the bufiing roll. Fig. S is a longitudinal section of the same. Fig. 9 is a detail view showing the double spiral feeding shaft.

ln the preferred embodiment of the invention as illustrated in the accompanying drawings, the improved buiiing machine comprises a frame 1, which will be hereinafter designated as the main frame, and which includes a base and side structures rising therefrom, said side structures being of appropriate outline and maintained relatively rigid by transverse braces, as shown.

Mounted in the frame 1 at an appropriate height above the base is a shaft 2 on which is mounted the bufiing roll 3. rlhe buiiing roll 3 is provided with means for clamping the sheets of abrading material in place. This means includes a clamp comprising duplicate members 4 having outer sections, the outer surfaces of which are curved concentric with the surface of the roll and the inner surfaces arranged flat to cooperate with the cut away portion 5 of the roll. The clamping members between the meeting edges of which the material is to be received and clamped have depending end sections G which lit depressions in the ends of the roll and are pivotally connected thereto by screws 7. rPhe proximate surface of the sections 6 are on relatively reverse inclinations below the screws forming in effect a wedge shaped channel to receive a spreading key 8 inserted from the end of the roll whereby the upper edges of the clamping members may be forced together. The collars 9 are mounted upon the shaft 2 and have flanges 10 to overlie and rest upon the key 8 to hold the same in clamping position. The bufling surface is provided by a felt layer l1 over which is arranged emery cloth or paper, the terminals of both the felt strip and cloth being held between the clamps 4. An even cylindrical surface is thus presented for abrading purposes, while at the same time the emery cloth may be conveniently renewed when desired.

Supported upon levers 12 pivotally mounted at 13 on the forward portion of the frame 1 is what we term a bed roll 14. The bed roll is particularly designed to accommodate itself to the irregularities in the thickness of the leather so as to insure a comparatively even` buiiing operation. To this end the bed roll includes a shaft 15 fixed against rotation in the levers 12 and a block 16 mounted upon the shaft 15 and CJD :eyed thereon to prevent rotation of the block. Surrounding and supported upon the block 16 are pressure disks 17. These disks are centrally formed with an elongated rectangular aperture 18 of a size-to slid-ably receive blocks 1G, the end wall of the aperture being provided with pins 19 which slidably lit in openings 20 formed in a section 21, arranged beyond the block 16.Y Springs 22 are coiled about the pins 19 and bear between the end wall of the recess 18 and the proximate surface of the projection 21 from the block. The end wall of the recess 18 remote from the pins 19 is so arranged that when in contact with the block the pressure disks 17 are centrally arranged with relation to the shaft 15, and this is the normal position of the parts under the inuence of the springs 22. Pres* sure rings 23 loosely encircle the pressure disks 17 the relatively outer surface of the pressure ringsforming `that surface which engages the hide in the bufling operation. It is of course to be understood that as apparent .from the drawings, the bed roll is made up of a number of what may belcalled pressure elements, each including a section 21, the pressure disk 17 and the pressure ring The bed roll is completed by end fianges or plates which hold the parts in completed form. As the peripheral edges cf the pressure rings are comparatively narrow, and as the roll is made up of a number of such rings with cooperating parts, it is obvious that any part `of the bed roll may yield to accommodate itself to an unusual thickness in the hide, so that all parts of the hide will be evenly pressed on to the bulling roll with the most eective bu'liing action.

liupported from the main frame in rear of the bufling roll is a blower 24 operated as hereinafter described, which directs a blast through a suitable conduit 25 to the surface of the bulfing roll, whereby to take care of the loose refuse accumulating thereon in a manner usual in this type of machine.

Mounted above the builng roll is what we term the cleaning roll 26, this element being regarded as one of the important features of the present invention. The cleaning roll, which is a comparatively narrow rubber disk is adapted for travel longi.u tudinallyy of the-buffing roll, while at the same time rotating, whereby the surface of the abrading material of the buflhig roll is effectively cleaned of the accumulated grease and refuse, whereby the abrading material has the life of its effective abrading "function materially increased. The cleaning roll is mounted upon guide shafts 27, 28,7secured in an auxiliary frame, later described, and operated through what is known as double thread drive shaft 29.

head being provided with Ya forwardly eX- tendino stub shaft 32 on which is rotatably mounted a drive drum 33 formed at one end to provide a clamping flange, there being provided a similar cooperating disk to cooperate with the first mentioned flange as a clamping-element. Said disk flange `and drum carrying flange in the particulars illustrated in Fig. 4 both indicated at Fig. 4. The proximate faces of the fianges are undercut forming` a dove-tail .recess to` receive a similar shaped annular projection 35 from the cleaning roll, the roll: being formed with a central opening of which the pro` jection forms the outer wall. Bolts 3G passing through the flanges bind the respective l members and the roll together so that the roll and drum are secured in relatively fixed relation in a manner to permit convenienti renewal of the roll when desired.` shaft 32 extends through the drum and be` yond the same is terminally threaded to re- Stub Y ceive a second head 37 formed with an openf ing 3S to slidably coperatewith the guide rod 27. The head 3() has attached thereto an operating yoke 39 partially encircling the double threaded shaft .29 and coperating therewith in the usual manner of such connections, so that in the operation of the shaft the roll is reciprocatingly fed length# wise Vthe shaft, as will be obvious. Mounted in the extreme upper end of the frame is a shaft 40 on which is mounted a drum 41 adapted to be connected with the drum 33 to operate the cleaning roll.

The cleaning roll 26 is mounted for movement to and from the buliing roll, the guide shafts 27 and 28 being for this purpose mounted in a frame arm 42 pivotally or rotatably mounted upon feed shaft 29. The remote guide shaft 27 passes through the cam slot 43 in the auxiliary framel 44 pivoted on the main frame and normally held 'in a normal position` through the medium. of'a bar 45 pivoted uponthe main frame and bearing at one end `against the auxiliary frame, the opposite end of the bar being connected to the main frame by spring46.

The auxiliary frame 44is controlled through a link 47 connected thereto and to an angle leyer 48 mountedupon the shaft 29, said angle lever being in turn connected to the operating rod 49. The rod 49 is connected .Y

through a bell cra-nk lever 50 mounted upon the frame 1 to a bar 51 operable in the lower portion of the frame and connected to the lower end of the levers 12, said levers being connected through the bar 52 with the treadle 53. By this means when the bed-roll` is operated toward the buifing roll the auxiliary'frame 44 is correspondingly moved through the cam slot arrangement and operates to force the cleaning roll into contact with the bufting roll.

A main shaft 54C is mounted in the lower portion ot the frame and provided with the usual fast and loose pulleys 55, 56, for operating the shaft from any suitable source ot power. A belt wheel 57 is arranged upon the shaft and connected by a belt 58 to the belt wheel 59 upon the cleaning roll operating shaft 29, and the opposite end of this shaft is connected by belt 60 passed over pulleys 6l, 62, on the respective shafts, t0 the drum shaft 40. A second belt wheel 63 is mounted upon the main shaft and connected by belt 64 with belt wheel 65 on the shaft or" the bui'ling roll.

The operation of the improved builing machine is fully apparent from the above description, taken in connection with the drawings, it being particularly noted that during builing operation the bed roll automatically accommodates itself to the irregularities in the thiclmess to insure uniform bufling without undue wear of the hide, and that during such buiiing operation the buiiing roller or wheel is subjected to the action of the cleaning roller with the effect to maintain said butling roll at all times in cleanly condition.

What is claimed is l. A bufiing machine including a main frame, an auxiliary frame pivotally mounted thereon and formed with a cam slot, a cleaning roll pivotally supported on the main frame and having engagement with the cam slot, and means for operating the auxiliary frame to induce a vertical reciprocal action of the buiiing roll.

2. A builing machine including a main frame, a frame arm pivotally mounted thereon, a cleaning roll pivotally mounted in the frame arm, an auxiliary frame pivotally mounted on the main frame and including a cam slot, a connection between said cam slot and cleaning roll, and means for oper ating the auxiliary frame to induce vertical reciprocal movements of the cleaning roll.

8. A builing machine including a main frame, a frame arm pivotally mounted thereon, a cleaning roll pivotally mounted in the frame arm, an auxiliary iframe pivotally mounted on the main frame and including a cam slot, a connection between said cam slot and cleaning roll, and means for operating the auxiliary frame to induce vertical reciprocal movements of the cleaning roll, and a spring operated member carried by the main frame to yieldingly hold the auxiliary frame in normal position.

4L. A bufling machine including a main frame, a frame arm pivotally mounted thereon, a cleaning roll pivotally mounted in the frame arm, an auxiliary frame pivotally mounted on the main frame and including a cam slot, a connection between said cam slot and cleaning roll and means for operating the auxiliary frame to induce vertical reciprocal movements of the cleaning roll, and means for feeding the cleaning roll transversely of the main frame.

5. A cleaning roll fory buiiing machines including a head having a depending shaft receiving eye, a yoke projecting rearwardly from the head and formed for cooperation with a feeding shaft, a drum rotatably supported on and in advance of the head, a cleaning roll removably mounted on the drum, and a second head secured on the first mentioned head in advance of the roll, said second head being formed with a guide rod receiving opening.

In testimony whereolI I affix my signature in presence of two witnesses.

CARVEL R. LUTES.

Witnesses CHARLES R. OCONNELL, JOHN WV. ODONNELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

